Cassette ejection mechanism of a cassette tape recorder

Abstract

A cassette ejection mechanism includes an ejecting plate movably attached to a guide plate and having a pressing element for pressing a magnetic head and a pinch roller, a boosting plate movably attached to the guide plate, and a stop member attached to the guide plate so as to be able to engage the boosting plate to lock the same. After the magnetic head and pinch roller are moved by the pressing element to positions where they do not hinder the movement of a cassette holder, the stop member is pressed by the pressing element to be disengaged from the boosting plate. The boosting plate is urged by an urging element stretched between the ejecting plate and boosting plate to move the cassette holder from its lower position to its upper position.

What is claimed is: 
     
       1. A cassette ejection mechanism of a cassette tape recorder comprising a pair of guide plates facing each other, a cassette holder including a holder support rockingly attached to the guide plates and a holder body supported by the holder support, said cassette holder and holder body being movable between upper and lower positions between the guide plates and capable of housing a tape cassette therein, and a magnetic head and a pinch roller arranged movably to come into contact with a magnetic tape in a tape cassette in the cassette holder when the cassette holder is located in the lower position thereof, wherein a tape cassette located together with the cassette holder in the lower position of the cassette holder, along with the cassette holder, moves to the upper position of the cassette holder after the magnetic head and the pinch roller move to positions where the magnetic head and the pinch roller do not hinder the movement of the cassette holder, and then a tape cassette slides in the cassette holder to be ejected, and further comprising: an ejecting plate attached to one of the guide plates to be movable between first and second positions, whereby the magnetic head and the pinch roller are moved to the positions where the magnetic head and the pinch roller do not hinder the movement of the cassette holder as the ejecting plate moves from the first position to the second position thereof, and whereby a tape cassette in the cassette holder is slid to be ejected as the ejecting plate moves from the second position to the first position;   a boosting plate attached to said one guide plate to be movable between first and second positions, whereby the cassette holder is moved from the lower position to the upper position thereof as the boosting plate moves from the first position to the second position thereof;   urging means stretched between the ejecting plate and the boosting plate, whereby the boosting plate is urged to move from the first position to the second position thereof as the ejecting plate moves from the first position to the second position thereof; and   a stop member attached to said one guide plate for engaging the boosting plate, thereby locking the boosting plate in the first position thereof,   said ejecting plate including pressing means for pressing the stop member to disengage the stop member from the boosting plate when the ejecting plate reaches the second position thereof.   
     
     
       2. A cassette ejection mechanism of a cassette tape recorder according to claim 1, which further comprises a slide means disposed inside the holder body for sliding together with a tape cassette, a coupling plate rockingly attached to said one guide plate and coupled to the slide means to rock as the slide means slides, and an urging member disposed between said one guide plate and the coupling plate to apply an urging force to the coupling plate in rocking motion, and wherein the ejecting plate includes a swinging strip which engages the coupling plate to rock the same against the urging force of the urging member as the ejecting plate moves from the second position to the first position thereof, thereby sliding a tape cassette together with the slide means and ejecting the tape cassette. 
     
     
       3. A cassette ejection mechanism of a cassette tape recorder according to claim 1, wherein said pressing means includes a pressing member for pressing the magnetic head and the pinch roller to move the same to the positions where the magnetic head and the pinch roller do not hinder the movement of the cassette holder as the ejecting plate moves from the first position to the second position thereof, and for pressing the stop member when the ejecting plate reaches the second position thereof. 
     
     
       4. A cassette ejection mechanism of a cassette tape recorder according to claim 3, which further comprises a guide member attached to the holder support, and wherein the boosting plate has a slant guide surface capable of engaging the guide member, the slant guide surface pressing the guide member to rock the holder support as the boosting plate moves from the first position to the second position thereof, thereby moving the holder body from the lower position to the upper position thereof. 
     
     
       5. A cassette ejection mechanism of a cassette tape recorder according to claim 3, wherein said boosting plate includes an engaging portion, and the stop member is rockingly attached to said one guide plate and includes a stopper for engaging the engaging portion of the boosting plate to lock the boosting plate in the first position thereof, and the stop member further includes a contact portion capable of coming into contact with the pressing means, so that the engaging portion of the boosting plate is disengaged from the stopper as the contact portion is pressed by the pressing member.